Structured Logging

[prosdev]

Phase: 6 - Observability
Estimated Effort: 2 hours
Tasks: Task 12 from specs/core-pipeline/tasks.md

Checklist

Task 12: Add Structured Logging (2 hours)

• Configure structlog (logging/logger.py)
  • JSON format for production
  • Human-readable for dev
  • Context processors
• Add logging to Processor (event received, adaptation)
• Add logging to Buffer (flush operations, buffer sizes)
• Add logging to Stores (write operations, errors)
• Add logging to API endpoints (requests, responses)
• Ensure no sensitive data in logs
• Write unit tests

Acceptance Criteria

• structlog configured correctly
• Logs are JSON in production
• Logs are human-readable in dev
• Key operations logged (counts, latencies)
• No sensitive data in logs
• Tests pass

Files to Create/Update

src/eventkit/logging/logger.py (new)
src/eventkit/processing/processor.py (updated)
src/eventkit/processing/buffer.py (updated)
src/eventkit/stores/firestore.py (updated)
src/eventkit/api/collect.py (updated)
tests/unit/logging/test_logger.py (new)

Dependencies: Issue #7
User Stories: All (observability)